Voltage Regulators

Voltage regulators are ICs used to generate a stable and consistent voltage within a circuit. They take an input voltage and convert this into a fixed output voltage. Even if the input voltage changes, the regulator will continue to provide the same output. The voltage regulator will take the output voltage and compare it to a reference voltage. It will then adjust the pass device to help manage the output voltage. This helps to regulate the voltage throughout a circuit design, dependant on where the voltage regulator(s) are.

Voltage regulators are essential in electronic circuits that include components that require a particular voltage input. For example, a processor. The input voltage, output voltage and output current are all important things to consider when choosing a voltage regulator IC.

Voltage regulators cannot convert the voltage from AC to DC, for example. If you require voltage conversion to run in parallel to your voltage regulator, please see our range of Digital to Analogue Converters (DACs) or Analogue to Digital Converters (ADCs).

Types of voltage regulator

  • Buck-Boost Switching Regulator
  • Charge Pump
  • Linear Voltage Regulator
  • LDO (Low Dropout) Voltage Regulator

Where are voltage regulators used?

Voltage regulators are found in most electronics circuits that require voltage management or voltage regulation. This includes chargers, power supply units (PSUs), telecommunications and automotive applications.


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Description Price Regulator Function Maximum Output Current Regulator Type Number of Outputs Line Regulation Accuracy Load Regulation Mounting Type Polarity Package Type Quiescent Current Pin Count Reference Voltage Output Type
RS Stock No. 533-9599
Mfr. Part No.LM1117MP-ADJ/NOPB
$2.32
Each
units
- 800mA Low Dropout Voltage 1 0.035 % ±1% 0.2 % Surface Mount Positive SOT-223 - 3+Tab 1.262V Adjustable
RS Stock No. 796-8060
Mfr. Part No.LM7805CT/NOPB
$2.88
Each (In a Pack of 5)
units
- 1A Linear Voltage 1 150 mV - 150 mV Through Hole Positive TO-220 8.5mA 3 - Fixed
RS Stock No. 805-6622
Mfr. Part No.MC7915CD2TR4G
$1.07
Each (On a Tape of 20)
units
- 1A Linear Voltage 1 300 mV - 300 mV Surface Mount Negative D2PAK - 3 - Fixed
RS Stock No. 100-5932
Mfr. Part No.LM1117MP-ADJ/NOPB
$0.777
Each (On a Reel of 1000)
units
- 1.5A Low Dropout Voltage 1 0.035 % ±1% 0.2 % Surface Mount Positive SOT-223 - 3+Tab 1.262V Adjustable
RS Stock No. 165-4187
Mfr. Part No.MIC29300-12WT
BrandMicrochip
$4.935
Each (In a Tube of 50)
units
- 3A Low Dropout Voltage 1 0.5 % ±1% 1 % Through Hole Positive TO-220 - 3 - Fixed
RS Stock No. 536-0492
Mfr. Part No.LP2950ACZ-3.3/NOPB
$1.596
Each (In a Pack of 5)
units
- 100mA Low Dropout Voltage 1 0.1 % ±0.5% 0.1 % Through Hole Positive TO-92 - 3 - Fixed
RS Stock No. 756-3930
Mfr. Part No.TA78M05F(TE16L1,NQ
BrandToshiba
$0.986
Each (In a Pack of 5)
units
- 500mA Linear Voltage 1 100 mV ±4% 100 mV Surface Mount Positive HSOP 8mA 3 - Fixed
RS Stock No. 810-0063
Mfr. Part No.LM317KCT
$0.901
Each (In a Pack of 50)
units
- 1.5A Linear Voltage 1 0.07 %/V - 1.5 %/V Through Hole Positive TO-220 - 3 1.3V Adjustable
RS Stock No. 102-3493
Mfr. Part No.MC7824CTG
$0.889
Each (In a Tube of 50)
units
- 1A Linear Voltage 1 60 mV ±4% 65 mV Through Hole Positive TO-220 3.6mA 3 - Fixed
RS Stock No. 121-9654
Mfr. Part No.AZ1117CR-3.3TRG1
$0.13
Each (On a Reel of 1000)
units
- 800mA Low Dropout Voltage 1 10 mV ±1% 15 mV Surface Mount Positive SOT-89 6mA 3 - Fixed
RS Stock No. 163-2617
Mfr. Part No.NCP4683DSQ33T1G
$0.651
Each (On a Reel of 3000)
units
- 400mA Linear Voltage 1 0.1 %/V ±1% 40 mV Surface Mount Positive SC-70 75µA 5 - Fixed
RS Stock No. 168-6047
Mfr. Part No.LM217T
$1.082
Each (In a Tube of 50)
units
- 1.5A Linear Voltage 1 0.02 %/V - 0.3 % Through Hole Positive TO-220 - 3 1.3V Adjustable
RS Stock No. 168-6064
Mfr. Part No.L78M05CV
$0.815
Each (In a Tube of 50)
units
- 500mA Linear Voltage 1 100 mV - 100 mV Through Hole Positive TO-220 6mA 3 - Fixed
RS Stock No. 168-6797
Mfr. Part No.L7809CV
$0.595
Each (In a Tube of 50)
units
- 1.5A Linear Voltage 1 180 mV 2% 180 mV Through Hole Positive TO-220 8mA 3 - Fixed
RS Stock No. 910-1607
Mfr. Part No.MIC29302WU
BrandMicrochip
$3.832
Each (In a Pack of 5)
units
- 3A Low Dropout Voltage 1 0.5 % ±1% 1 % Surface Mount Positive D2PAK (TO-263) - 5 1.252V Adjustable
RS Stock No. 146-0315
Mfr. Part No.MIC29302WU
BrandMicrochip
$3.142
Each (In a Tube of 50)
units
- 3A Low Dropout Voltage 1 0.5 % ±1% 1 % Surface Mount Positive D2PAK (TO-263) - 5 1.252V Adjustable
RS Stock No. 545-5764
Mfr. Part No.LT1086CT-12#PBF
$8.79
Each
units
- 1.5A Low Dropout Voltage 1 25 mV - 36 mV Through Hole Positive TO-220 5mA 3 - Fixed
RS Stock No. 463-650
Mfr. Part No.MC7805CDTG
$0.923
Each (In a Pack of 20)
units
- 1A Linear Voltage 1 20 mV ±4% 25 mV Surface Mount Positive DPAK 3.2mA 3 - Fixed
RS Stock No. 922-2369
Mfr. Part No.LM7805CT/NOPB
$2.93
Each (In a Tube of 45)
units
- 1A Linear Voltage 1 150 mV - 150 mV Through Hole Positive TO-220 8.5mA 3 - Fixed
RS Stock No. 125-0053
Mfr. Part No.MC7824ACTG
$0.802
Each (In a Tube of 50)
units
- 1A Linear Voltage 1 28 mV - 25 mV Through Hole Positive TO-220 6mA 3 - Fixed